math 1
posted by Anonymous .
Kelly interviewed 75 customers at Borders about their magazine subscriptions. The revealed the following information:
32 had a subscription to Fortune
20 had a subscription to Newsweek
23 had a subscription to Time
9 had a subscription to Fortune and Newsweek
13 had a subscription to Fortune and Time
5 had a subscription to Newsweek and Time
4 had a subscription to all three magazines
Kelly’s supervisor wants to know how many customers subscribed to Fortune or Time magazine. Can this information be determined from Kelly’s report? If so, find the number of customers that subscribed to Fortune or Time magazine.

construct a Venn diagram with three overlapping circles, labeled F, N, and T for the 3 magazines
Fill in form the centre outwards, that is, place 4 in the intersection of all 3
9 in the intersection of only the F and T overlaps, (9+4 = 13)
etc
Fortune OR time would be the total of all the different part except those that subscribe to ONLY N
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